The goal of this clinical trial is to learn if oral calcium carbonate can improve uterine contractions and labor outcomes in term pregnancies. It will also evaluate the safety of calcium carbonate when used during labor. The main questions it aims to answer are: Does oral calcium carbonate increase uterine contraction strength? Does it lead to shorter labor duration or higher vaginal delivery rates? What side effects or complications, if any, occur with calcium carbonate use during labor? Researchers will compare oral calcium carbonate to no treatment to see if it helps improve labor efficiency and reduce cesarean delivery rates. Participants will: Be randomly assigned to receive either 2,000 mg of oral calcium carbonate or no intervention Undergo monitoring with an intrauterine pressure catheter to measure contraction strength Be observed for two hours without oxytocin to assess calcium's direct effect on contractions Have data collected on labor progression, delivery outcomes, and neonatal health
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Contraction Frequency
Timeframe: Two hours after receiving the study medication or, for control participants, two hours after enrollment.
Uterine contraction strength
Timeframe: Two hours after receiving the study medication or, for control participants, two hours after enrollment.
Peak strength
Timeframe: Two hours after receiving the study medication or, for control participants, two hours after enrollment.